Steaming or cooking vessel



July 28, 1925 1,547,763

D. L. KQHLMAN, JR

STEAMING OR COOKING VESSEL Original Filed Dec. 4, 1923 000 0 OOOOODOU 06 3900 v 000 ne 2a 1 oooeoccoc auno obo j Oocoaco OOOOGQ Zm/ehfn':

21'? 10 2; x lay an 1 Patented July 28, 1925. 1

UNITED sTArssP-ATENr LQ EWI K new. n ara ca manners.

E'AM 6R m nsweaoriginal application filed December 4 192a; Se'r ial No. 678,463. Divided and this; application fileu' November 24, 1924. Serial No. 751,983. i

To all whom] it may concern:

Be it known that I; DIRK LODEWIJK KOHLMAN, J r.,' a subject of the Queen of the Netherlands; residing at Dordrecht, the

5 Netherlands, have invented certain new anduseful Improvements in Steaming or (3001'- mg. Vessels, of which the following isa' specification.

This invention relates to a steaming or" abovetypey and i n-wliich the outer pan is" provided with an improved T bottom construct-ion. No claim is, however,'-1iiade to any of the features enumeratedaloovelper se,

since they comprise the subjectematter of '25 my co -pending application Serial ltd. 678,463,"fi1ed December 4 1'923,of,wh1ch thisv application is a division." The main 7 I .below the bottomof thepan 19, then, the

steam. genera-ted after the pan; has been objectof the present applicat'ionis to providea cooking or steaming pan comprising an outer pan and a plurality of inner pans located one above the other and inwhich the above features maybe combined.

In order that, the invention may be clearly understood reference is directed to the accompanying drawing in which an embodiment of the invention'is illustrated.

The figure of the drawing shows partly in section and partly in elevation an outer pan containing three inner pans located one above the other The outer pan 18 'is provided witha inantle17 and in this outer-pan are mounted.

three inner pans 19, 20 and 21. Each of the inner pans may comprise a flange por.

tion -below the upper edge to form a sup port for the cover and theiportion of the pan. above the flange may beperforated.

The outer pan 18 is further provided with supporting annular flanges 22', 23wand 24: secured to its inner wall,1from which flanges the inner pans are suspended with their upper edges being suitably shaped to this end. Instead of supporting flanges tor the upper edge ot-the inner pans a supporting plate 25 may e used r' stingen pp t g' a g cover '2 is placed. V vided with perforations-7 for the purpose pans and the outer pan and-this will enter pan are reversed and are adapted to receive eventual condensation water. The mantle 17 extends from the upper edge of the outer pan 18 downwardlyto' almostthe lower end. of this pan so that a heating space surrounds the whole pan;

V p v The; wall of the outer pan 18 is provided with openings 28 'for heat transmission and upon the top a The inner pans are proof allowing the passage of steam and it'wi'll be noted that the inner pan 2'1may comprise a cover 9 having perforations 11 therein and abbve said cover perforations lO'rnay 7' be provided in the side of the pan. Each portion 5.' 1

7 pan is provided with a perforated bottom The operation'o'f this steamihg or eook ing pan -is as 'follow's Assuming that. the inner pans :are filled with any articles to. be cooked and; that the outer pan. contains water; the. level of which is located just heated for sometime ascends and enters the 21. Some of thesteam ,will of course ascend between the side walls of the. inner the perforations 7 inthe sides of the inner pans. sulting from the gas flame will ascend along: the sidesof theouter pan and the mantle 17 and will enter through tlieperforationsQS into the spacebetween' the outer pan' and the inner pan. An excess of hot gases can In the meantime the hot gases'reescape through the perforations-in thec'over I 2 by meansof perforations 10. [In this way condensation ofsteam} between the inner and outer' pan is prevented whilethe-rheat generatedis-imost advantageously and'c0m:- ,pletely utilized.) The annular projection 3&-

in the inner p-an 19 isfor thepurposeof di 1 'recting the: steam into the perforations-and thus into the pan: In order to -prevent the I central part of the contents of the innerpan" from becoming too hot, the central portion of the bottom of the inner pan maybe un'e perforated so that the bottom oi the inner:

v pan only has perforations between an unperforated central portion and an unperforated circumferential portion.

If desired the, outer pan may have vertical passages/into which the flames of the heat source can enter so that in this way the best source is utilized most effectively. The said passages may be narrower at the top and grow wider graduallydownwardly. The outer pan may be rectangular in cross section and a passage may then be provided at each corner. 7

I claim as my invention:

1. A steaming or cooking vessel comprising anouter pan; a supporting plate in said pan, a plurality of perforated inner pans supported in said outer pan and on said plate; and a cover for each of the inner pans adapted to seat below the upper edge of that inner-pan to thus form a perforated wall portion above the cover.

2. A steaming or cooking vessel comprising an outer pan; a supporting plate in said pan, a plurality of perforated inner pans supported in said outer pan and on said plate, each of said-pans having an annular flange below the upper edge thereof; and

' a cover adapted to seat on each of said annular flanges thus forming a perforated wall portion above the cover.

3. A steaming or cooking vessel comprising an outer pan; a supporting plate in said pan; a plurality of inner pans supported in said outer pan and on said supporting plate; and a cover for said outer pan.

4:. A steaming or cooking vessel compris- 1 ing an outer pan; a supporting plate in said pan; a plurality of inner pans supported in said outer pan and on said supporting plate; a cover for said outer pan and a mantle surrounding said outer pan for directing and retaining the heat.

5. A steaming or cooking vessel comprising an outer pan; a plurality of annular flanges secured to the inner side wall of said outer pan; an inner pan supported on each of said flanges; and a cover for said outer pan.

6. A steaming or cooking vessel comprising an outer pan; a plurality of-annular flanges secured to the inner side wall of said outer pan; an inner pan su norted on each of said flanges; a cover for said outer pan; and 'a mantle surrounding said outer pan for directing and retaining the heat.

7. A steaming" or cooking vesselicomprising an outer pan; a plurality of a nnular flanges secured to the inner side wall of said outer pan; an inner pan supportedon each of said flanges; a cover for said outer pan; a mantle surrounding said outer pan for directing and retaining the heat; and a cover for each of said inner pans.

8; steaming or cooking vessel comprising an outer pan; a plurality of annular flanges secured to the inner side wall of said outer pan; a plurality of inner pans supported in said outer pan on said flanges, each of said inner pans having perforations therein; a cover for each of the innervpans adapted to seat below the upper edge of that inner pan to thus form a wall portion above the cover; and a mantle surrounding the side of the outer pan for directing and retaining the heat.

9. A steaming or cooking-vessel comprising an outer pan; a supporting plate insaid pan; a plurality of perforated inner pans supported in said outer pan and on said plate; a cover for each of the inner pans adapted to seat below the upper edge of that inner pan to thus form a perforated wall portion above the cover; a cover for said outer pan; and a mantle surroundingth'e side of the outer pan for directing and retaining the heat.

1.0. A steaming or cooking vessel comprising an outer pan having perforations in the side wall; a supporting plate in said pan;

a plurality of perforated inner pans supported in said outer pan; one of said inner pans being supported on said plate;v a cover for each of the inner pans adapted to seat. below the upper edge of said inner pan to thus form a perforated wall portion above the cover; and a mantle surrounding the side of the outer vpan and secured thereto at the upper edge for retaining and directing the heat- 11 A steaming orcooking vessel comprising an outer pan; a plurality of annular flanges secured to the inner wall'of said outer pan; a plurality of perforated inner pans supported in said outer pan on said flange, each of said inner pans having a bottom portion comprising an imperforated annular portion surrounding a perforated central portion; a cover for each of said inner pans; and a cover for said outer pan.

12. A steaming or cooking vessel compris ing an outer pan having perforations in the side wall; a plurality of annular flanges se cured to the inner wall of said outer pan;

an inner pan supported on each of said flanges, each of said pans having perforations in the side wall and in the bottom portion; a cover for each of the inner pans adapted to seat below the upper edge of the side wall tothus form a perforatedwall portion above the cover; a cover for said outerpan; and a mantle surrounding'said outer pan secured at the upper 'edge there'- of and adapted to direct and retain the heat;

13. A steaming or cooking vessel compris ing an outer pan; a plurality of annular flanges secured to the inner wall of said outer pan; a plurality of perforated inner pans supported in said outer pan on said flanges, each of said inner pans having a bot-tom portion vcomprising an imperforated annular portion surrounding a perforated central portion; a cover for each of said in ner pans; a cover for sald outer pan; and a mantle surrounding the outer pan for d1' reoting and retaining the heat.

14. A steaming or cooking vessel comprising an outer pan having perforations in the side Wall; a plurality of annular flanges secured to the inner Wall of said outer pan; an inner pan supported on each of said flanges, each of said pans having perforations in the side Wall and in the bottom portion; a cover for eachof the inner pans adapted to seat the bottom of the inner pan.

below the upper edge of the side Wall to thus form a perforated Wall portion above the cover; a cover for said outer pan; a mantle surrounding said outer pan secured at the upper edge thereof and adapted to direct and retain the heat; and an annular projection'on the bottom portion of said pans for directing the steam to the perforations in In Witness whereof I have hereunto set my hand this 31st day of October, 1924.

DIRK LODEWIJK KOHLMAN, JR. 

